.box{
    width: 1000px;
    height: 460px;
    position: relative;
}
.box-img{
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;/* opacity: 1; 删除这个 */
}
.box-img:nth-child(1){
    opacity: 1; /* opacity: 1; 删除这个 */
}
.box-left{
    position: absolute;
    width: 35px;
    height: 70px;
    /* background: color #000;  */
    color: #ccc;
    top: 195px;
    border-radius:0 5px 5px 0;
    text-align: center;
    line-height: 70px;
    font-size: 27px;
}
.box-left:hover{
    background: color #000; ;
color: #fff;
}
.box-right{
    position: absolute;
    width: 35px;
    height: 70px;
    /* background: color #000;  */
    color: #ccc;
    top: 195px;
    border-radius:0 5px 5px 0;
    text-align: center;
    line-height: 70px;
    font-size: 27px;
    right: 0;
}
.box-right:hover{
    background: color #000; ;
color: #fff;
}
.box-zhiding>ul{
    padding: 0;
    margin: 0;
    list-style: none;
}
.box-zhiding li{
    width: 14px;
    height: 14px;
    border: radius 100%; ;
    background-color: #ccc;
    float: left;
    margin-right: 10px;
}
.box-zhiding li:hover{
    background-color: #fff;
}
.box-zhiding{
  position: absolute;
  bottom: 30px;
  right: 100px;
}